public class Main {

    public static void main(String[] args) {
	LinkedList<Integer> linkedList = new LinkedList <> ();
        for ( int i = 0 ; i < 5 ; i++ ) {
            linkedList.addFirst ( i );
            System.out.println ( linkedList );
        }

         linkedList.add(2,666);
        System.out.println ( linkedList );

        linkedList.remove ( 2 );
        System.out.println ( linkedList );

        linkedList.removeFirst ();
        System.out.println ( linkedList );

        linkedList.removeLast ();
        System.out.println ( linkedList );

    }
}
